package com.atguigu.gulimall.member.config;

import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

@Configuration
public class GuliFeignConfig {
    @Bean("requestInterceptor")
    public RequestInterceptor requestInterceptor() {
        return new RequestInterceptor() {
            @Override
            public void apply(RequestTemplate requestTemplate) {
                System.out.println("feign远程调用之前执行");
                // RequestAttributes可以拿到刚进来的请求
                ServletRequestAttributes requestAttributes = (ServletRequestAttributes)RequestContextHolder.getRequestAttributes();
                if(requestAttributes!=null){
                    System.out.println("RequestInterceptor线程...."+Thread.currentThread().getId());
                    HttpServletRequest request = requestAttributes.getRequest();
                    if (request != null){
                        //同步请求头数据,给新请求同步了老请求的Cookie
                        requestTemplate.header("Cookie", request.getHeader("Cookie"));
                    }

                }
            }
        };
    }
}
